1 files changed, 8 insertions, 0 deletions
diff --git a/bug/operation.go b/bug/operation.go
index f36e9e39..591c7176 100644
--- a/bug/operation.go
+++ b/bug/operation.go
@@ -13,3 +13,11 @@ type Operation interface {
 	OpType() OperationType
 	Apply(snapshot Snapshot) Snapshot
 }
+
+type OpBase struct {
+	OperationType OperationType `json:"op"`
+}
+
+func (op OpBase) OpType() OperationType {
+	return op.OperationType
+}